Intermolecular Forces Quiz

review notes, packet on IMFs

intermolecular forces

attraction forces between molecules

intramolecular forces

covalent/ionic bonds between atoms

van der waals forces

weaker attraction between molecules (IMFs)

london dispersion forces

occur between all molecules; instantaneous partial charges; weakest IMF

dipole-dipole interactions

occur between all polar molecules; permanent partial charges; stronger IMF

hydrogen bonding

occur between HF, HN, OH; special type of dipole-dipole w/ hydrogen; strongest IMF

boiling point

point where a liquid turns into a gas

melting point

point where a solid turns to a liquid

vapor pressure

pressure of a gas above a liquid surface

what determines a high boiling/melting point?

strong IMFs

what determines a high vapor pressure?

weaker IMFs